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"Education is the most powerful weapon which you can use to change the world”
– Nelson Mandela

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Lab Midterm Exam

Lab Midterm Exam

Q • Question 1 0 out of 2 points A student designed an investigation to determine the effect of temperature on the rate of seed germination. The student placed moist filter paper in each of the four culture dishes. Ten bean seeds were placed on the filter paper in each dish. The four dishes were numbered and placed in the dark at differen temperatures as follows: Dish 1: 10 ° C, Dish 2: 15° C, Dish 3: 20° C, Dish 4: 25° C. The total number of germinated seeds in each culture dish was counted each day for two weeks. Which data table is best for recording the results of this investigation? • Question 2 2 out of 2 points During the fermentation lab, we were studying the effect of temperature on yeast fermentation process. You were asked to label 4 bottles and fill each with different water temperatures. Bottle A – ice water Bottle B – room temperature water Bottle C – warm water Bottle D – boiling water Which bottle served as the control for this lab? • Question 3 2 out of 2 points Which of the following was not a valid conclusion in the osmosis/diffusion lab? • Question 4 2 out of 2 points An investigation was carried out using the two setups shown below. Other than the difference shown in the diagram, all other conditions were identical. State on possible hypothesis that could be tested using these setups. • Question 5 2 out of 2 points During the fermentation lab, we noticed the balloons attached to some of the bottles inflate over time. What gas released during the fermentation process caused the balloons to inflate?

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2. B. Bottle B 3. E. Water moved from a hypertonic solution to a hypotonic solution 4.The angle of the red light and the different temperatures will effect the plants differently. 5. B. CO2